Swage for inserted saw-teeth.



No. 793.020. PATENTED JUNE 20, 1905. W. L. NEWELL & U. STALEY. SWAGE FOR INSERTED SAW TEETH.

APPLICATION FILED JUNE 3, 1904.

2 SHEETS-SHEET 1.

ATTOR No. 798,020. PATENTED JUNE 20, 1905. W. L. NEWBLL & U. STALBY.

SWAGE FOR INSERTED SAW TEETH.

APPLICATION FILED JUNE 3, 1904.

2 SHEBTS-SHEET 2.

E :L E E:

' All? 30 liiu Arron/ms NTTED STATES Patented June 20, 1905.

PATENT OFFICE.

WALLACE I NEWELL AND ULYSSES S'IALEY, ()F BUCKEYE, WASHI NGTON.

SWAGE FOR INSERTED SAW-TEETH.

SPECIFICATION forming part of Letters Patent No. 793,020, dated June 20, 1905.

Application filed June 3, 1904. Serial No. 210,967.

To It when] it 72mg (Oil/(1771:

Be it known that we,W.-\LL.\cE L. NnwELL and Um'ssns STALEY, citizens of the United Statesand residents of Buckeye, in the county of Spokane and State of lVashington, have invented a new and Improved Swage for Inserted Saw-Teeth, of which the following is a full, clear, and exact description.

This invention relates to apparatus for swaging inserted saw-teeth; and the principal object of the invention is the construction of a .ma(ihine of the class specified which while simple and comparatively inexpensive in construction will be thoroughly ellicient in operation, whichlmay be readily adapted for operation upon saw-teeth of dillerent patterns, and which maybe adjusted to compensate for wear both upon the teeth of the machine and upon the saw-teeth operated upon.

The object above stated and others which will lltltlllztfttl appear are attained in the machine hereinafter described in a preferred form of embodiment and having the novel features thereof specilically pointed out in the appended claims, it being understood that changes in the structural details may be made within the scope of the claims without departing from the spirit of the invention or sacrilicing its advantages.

Reference is to be had to the accompanying drawings, forming a part of this sptwilication, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a view of the machine in side elevation, portions of the operating-levers being broken away to save space and a part of the supporting structure being broken away to show the arrangement of the parts therein. Fig. 2 is a plan view of the machine with the parts in the position shown in Fig. 1. Fig. 3 is a view of the machine in side elevation, the parts being in inoperative position. Fig. -l is a sectional view upon the line l l of Fig. 3. Fig. is a detail view of the saw-tooth carrier with a part broken away to show the construction of the sa\\'tooth clamp. Fig. c is a detail view of a sawtooth holder detached from the carrier. Fig. 7 is a detail view of the eccentric swage and a saw-tooth,

showing the tooth and swage in the relative positions occupied prior to the swaging action. Fig. 8 is a view of the parts shown in Fig. 7 in the relative positions occupied at the end of the swaging action; and Fig. 9 is a detail view, in vertical section, through the swage, showing the anvil and a saw-tooth in the relative positions occupied thereby at one stage of the swaging action.

Described in general terms, the machine consists of a supporting structure, an anvil, a saw-tooth carrier, by means of which a sawtooth is brought into contact with the anvil and held in contact therewith, and a swage adapted for operation upon a saw-tooth held against the anvil.

Referring to the drawings by the reference characters marked thereon for a more detailed description of the specilic form of the machine illustrated therein, 1 designates the base of the machine, at the forward end of which there is an upward projection 2, which is preferably formed integral with the base and which is slightly inclined toward the rear. Near the rear end of the base 1 is a smaller vertical projection 3. The upward projection 2 at the forward end of the base all'ords support for the anvil and for the swage, as will presently appear. The projection 2 is vertically channeled throughout a portion of its length upon its rear face, as shown at l in Fig. l, and in the channel 4 an anvil 5 is adjustably secured. The anvil 5 consists, preferably, of a block of hardened steel which is of the same width as the channel in which it moves and which presents an inclined face 6, against which the saw-teeth are pressed by the saw-tooth carrier and held during the swaging operation. The anvil is adjusted in the channel -1t by means of a set-screw 7, extending vertically downward through the top of the projection 12, and a horizontally-disposed set-screw 8, which is mounted in the projection 2 and has its inner end extending into the channel 4, as clearly shown in Fig. 4:. This screw 8 operates to clamp the anvil lirmly against one side of the channel 4.

The swage, which cooperates with the anvil 5 in shaping the saw-teeth, consists, preferably, of a horizontallydisposed rotatable member 9, which is journaled in apertures formed in the projection 2 at opposite sides of the channel 4. The member 9 is of cylindrical form, but has a portion of its surface cut away at 10 to form a recess to permit the saw-tooth to be brought into proper relation with the anvil before the beginning of the swaging operation. At one end the swage 9 is circumferentially channeled, as shown at 11 and 12, and a small plate 13, having a semicircular notch in the end thereof, is removably mounted upon one side of the projeetion 2 to engage with one of the said channels and hold the swage against longitudinal movement in its bearings. At the opposite end the swage 9 presents a reduced portion 14, which is threaded at its outer end to receive a nut 15 and which is squared adjacent to its inner end to receive an arm 16, having a squared aperture, which is adapted to fit upon the squared portion of the projection 14 at the end of the swage. The arm 16 is provided at its free end with lateral slotted projections, which form together a segmental guide 17. Upon the cylindrical portion of the swage adjacent to the arm 16 an operat ing-lever 18 is mounted, and this lever is adjusted in position relatively to the arm 16 by means of a small clamping-bolt 19, mounted in the lever 18 and extending through. the slot in the segmental guide 17. The slot in the guide 17 is formed in a curve having the axis of the swage 9 as its center. Consequently the bolt 19, which is carried by the lever 18, mounted on the swage, will move freely in the slot 17 when the nut on the bolt is loosened, thus permitting the lever 18 to be brought into any desired position in relation to the arm 16 and then clamped in such position.

The throw of the lever 18, by which the swage 9 is operated, is limited by an adjustable stop 20, mounted upon the side of the projection 2 adjacent to the operating-lever. The stop 20 consists, preferably, of a stud carried by a plate having a slot formed therein for the passage of a clamping-screw, as indicated in dotted lines in Fig. 3; but the stop may be otherwise adjusted, if so desired.

The saw-tooth carrier is mounted between the projection 2 at the forward end of the base, in which the anvil and swage are mounted, and the projection 3 at the rear of the base, upon which a bell-crank lever 21 is mounted to operate the carrier. The carrier itself is pivotally mounted upon a supporting-plate 22, which is longitudinally slotted, as shown at 23, and is adjustable longitudinally of the base-plate 1 by means of a screw 24, in threaded engagement with a lug 25 at the rear of the plate 22 and rotatable in an upward projection 26 upon the base-plate 1, near the middle thereof. The plate 22 is clamped in position upon the base 1 by means of a clamping-screw 27, which extends downward through the slot 23 and into a threaded opening in the base-plate. At the forward end of the plate 22 the carrier 28 for the saw-teeth is mounted upon a horizontal pivot-pin 29, as best shown in Figs. 1 and 3. The carrier is provided upon one side with a tooth-holder 30, which consists, preferably, of a plate of the form shown in Fig. 6, which is provided near the middle upon its inner face with a recess 32, which is curved at its upper side to correspond to the curvature of the back of a saw-tooth of one of the standard patterns. The plate 30 is secured in position upon the carrier by means of transverse bolts 33, which extend through slots 31 in the carrier and hold the plate 30 in contact with lugs 33, formed on the carrier, and to adjust the position of the plate upon the carrier an adjusting-screw 34 is mounted in a lug 35 at the freeend of the carrier, as clearly shown in Fig. 5. In order to secure a saw-tooth in the recess 32 of the tooth-holder, a clamping device is mounted in the carrier opposite the said recess, and-in the form of the invention illustrated the clamping device comprises a sleeve 36, mounted on the carrier, a hollow screw 37 threaded in the sleeve, a threaded pin 38, extending longitudinally through the hollow screw 37 and having a head 39 at its inner end, a rubber washer 40, mounted on the threaded pin 38 between the head 39 and the inner end of the screw 37, and. a nut 41, threaded upon the outer end of the pin 38. As clearly shown in Fig. 5, the turning of the screw 37 by means of the milled head formed thereon will cause the pin 38, which is mounted within the screw, to move in and out in the sleeve 36, and the cushioning-washer 40, disposed between the head 39 of the pin 38 and the inner end of the screw 37 will permit the pin 38 to yield slightly while brought into engagement with a saw-tooth, thus making the pin 38 adapt itself automatically to saw-teeth of slightly-different thicknesses. The nut 41 upon the threaded outer end of the pin 38 is provided to vary the normal pressure upon the cushioning-washer 40.

Movement is imparted from the bellcrank lever 21 to the pivoted carrier 28 by means of an adjustable link 42, pivoted at one end to the lever and pivoted at its other end to a lug 43, formed at the back of the carrier. The link 42 is made up, preferably, of an internallythreaded sleeve 44, having intermediate its ends a portion 45, of polygonal cross-section, and two screws 46, in threaded engagement with the sleeve 44. The screws 46 have forked heads 47 for the reception of the bellcrank lever 21 and lug 43, respectively, with which the link 42 is pivotally connected, as already explained. In order to hold the sleeve 44 in adjustment upon the screws 46,

Lil

it is desirable to provide nuts 48 upon the two screws, which may be jammed against the ends of the sleeve 44 and so hold the sleeve firmly against rotation.

ln using the machine described in the foregoing paragraphs it is necessary to adjust the various parts of the machine to correspond to the dimensions of the teeth to be operated upon. The anvil 5 must be brought into proper position in relation to the swage f), the stop must be set to limit the throw of the lever to at the proper point, and the tooth holder must be secured upon the carrier in proper position relatively to the anvil. The carrier itself must be properly adjusted upon the base-plate l of the machine, and the link 42 between the bellcrank lever 21 and the rarrier must be so adjusted in length that when the bell-crank lever is thrown forward to advance the carrier and bring the sawtooth into contact with the anvil the link and the shorter arm of the bell-crank lever will be alined when the tooth is ammed against the anvil.

After the parts of the machine have been adjusted as above stated the operation of swaging the tooth may be performed very quickly and easily. The tooth is first inserted into the recess 92 of the tooth-holder and clamped therein by turning the hollow screw 37 in the carrier. Then the bell-crank lever 2i is thrown forward and the back of the head of the tooth is jammed against the beveled face of the anvil, in which position it is securely held by the carrier as long as the link 42 and the shorter arm of the bell-crank lever remain in alinement, as shown. The lever 15 is then thrown forward until it contacts with the stop 20. and the swage t) is turned in its bearings, bringing the swaging-surfacc of the swage against the face of the tooth adjacent to its point, as clearly shown in Figs. 7, 8, and t), and spreading the point of the tooth slightly to the extent desired. After the lever is has been carried forward into contact with the stop 20 the operation of swaging is complete and the lever may be thrown back to inoperative position. Then the l. ellcrank lever may be drawn back to remove the sawtooth from contact with the anvil and permit its removal from the holder mounted upon the carrier.

In order to 'ary the amount of spread given to the teeth by the swage f), the anvil may be adjusted in the channel 4, an upward adjustment of the anvil reducing the spread and downward adjustment increasing the spr ad. To compensate for wearof the teeth,

the plate 22, upon which the :arrier is mounted, is advanced slightly upon the base-plate, and the link -12, connecting the bell-crank lever with the carrier, is lengthened a little by turning the sleeve ti upon the screws "to.

in order to adapt the swage for operation upon teeth of different patterns, the only change necessary is to remove the holder 30, in which the recess 32 is adapted to a particular pattern of tooth, and to substitute therefor another plate which has a recess adapted to conform to the teeth which it is desired to swage. As the holder is composed of a single plate of metal and an be very cheaply made, it will be obvious that the saw-swage may be furnished with a set of holders having recesses therein which correspond to the various standard patterns of saw-teeth and that the swage may be so adapted to operate upon all the standard patterns of teeth at a very small cost.

Having thus described our invention, we claim as new and desire to secure by Letters Patent- 1. in a swage for inserted saw-teeth, in combination, an anvil, a swaging member, a pivoted saw-tooth carrier coi'iperating therewith, a lever for advancing said carrier, and automatic means for locking said carrier against return.

2. The combination in a swage for inserted saw-teeth, of an anvil, a pivoted saw-tooth carrier by which Saw-teeth may be brought into contact with the anvil, a lever foadvancing said tooth carrier and a swaging member disposed adjacent to the anvil.

3. The combination in a swage for inserted saw-teeth, of an anvil, a swaging member disposed adjacent to the anvil, a saw-tooth carrier by which sa\\"-teeth may be brought into engagement with the anvil, and ope 'at ing devices for said carrier comprising a lever, and a link connecting said lever with said arrrie and forming a toggle-joint.

t. The combination in a swage for inserted saw-teeth, of an anvil, a rotatable swaging member disposed adjacent to the anvil, a pivoted saw-tooth carrier by means of which the saw-teeth may be brought into contact with said anvil, and an adjustable support for said carrier.

5. The combination in a swage for inserted saw-teeth, of an anvil, a swaging member disposed adjacent to said anvil, a pivot-ed saw-tooth carrier, a bell-crank lever for op erating said carrier, and an adjustable link forming a connection between the elbow of said bell-crank lever and said carrier.

6. The combination in a swage for inserted saw-teeth, of an anvil, a swaging member disposed adjacent to the anvil, a movable carrier by which saw-teeth may be brought into engagement with said anvil, and a saw tooth holder adjustable on said carrier.

7. The combination in a swage for inserted saw-teeth, of an anvil, a swaging member disposed adjacent to the anvil, a pivoted car rier, and a tooth-holder removably mounted on said carrier.

8. ln a swage for saw-teeth, in combination, a saw-tooth rarrier, a clampingserew in connection with said airrier for holding a saw-tooth thereupon, said clamping-screw having a head adapted to abut against the saw-tooth, a resilient member behind said head, means for adjusting the said resilient member, and means for advancing said toothcarrier.

9. In a swage, in combination, a saw-tooth carrier, a clamping screw carried thereby and having an enlarged head adapted to abut against a saw-tooth held in said carrier and having a reduced portion adjacent to said head, an elastic ring surrounding said reduced portion, and a threaded member behind said ring and adapted to compress the same-against said head. i

10. In a swage, in combination, a sawtooth carrier, a hollow screw mounted upon *said carrier, an inner member having an enlarged head at the inner extremity thereof adapted to abut against a saw tooth held in said carrier, said inner member having a reduced stem passing through said hollow screw, an elastic ring disposed about said stem between said head and the extremity of said screw, and a nut mounted upon said stem for compressing said ring.

In testimony whereof We have signed our names to this specification in the presence of two subscribing witnesses.

WALLACE L. NEWELL.- ULYSSES STALEY. Witnesses JOHN G. ANDREWS, J. O. WILLIAMS. 

